Math Winter Review

Front

What is rounding in mathematics?

Back

Rounding is the process of adjusting the digits of a number to make it simpler while keeping its value close to what it was. For example, rounding 21.869 to the nearest hundredth gives 21.87.

Front

How do you round a number to the nearest hundredth?

Back

To round a number to the nearest hundredth, look at the digit in the thousandths place. If it is 5 or greater, increase the hundredths place by 1. If it is less than 5, keep the hundredths place the same.

Front

What is volume in geometry?

Back

Volume is the amount of space occupied by a three-dimensional object, measured in cubic units.

Front

How do you calculate the volume of a rectangular prism?

Back

To find the volume of a rectangular prism, multiply its length, width, and height: Volume = length × width × height.

Front

What does it mean to compare decimals?

Back

Comparing decimals involves determining which decimal is greater, less than, or equal to another by looking at the digits from left to right.

Front

What is the tenths place in a decimal?

Back

The tenths place is the first digit to the right of the decimal point. For example, in 3.4, the 4 is in the tenths place.

Front

What is the hundredths place in a decimal?

Back

The hundredths place is the second digit to the right of the decimal point. For example, in 3.45, the 5 is in the hundredths place.

Front

How do you add decimals?

Back

To add decimals, align the numbers by the decimal point and add as you would whole numbers, placing the decimal point in the sum directly below the other decimal points.

Front

What is the sum of 34.616 and 9.7?

Back

The sum of 34.616 and 9.7 is 44.316.

Front

How do you subtract decimals?

Back

To subtract decimals, align the numbers by the decimal point and subtract as you would whole numbers, placing the decimal point in the difference directly below the other decimal points.